An official investigating a series of airlines crashes discovers several mysterious pieces of debris and other anomolies. His investigation ultimately leads him to discover that the planes -- and their passengers -- have been tampered with… MoreAn official investigating a series of airlines crashes discovers several mysterious pieces of debris and other anomolies. His investigation ultimately leads him to discover that the planes -- and their passengers -- have been tampered with by time travelers from the future, as part of a plan to repopulate their dying civilization.